Accession Number:

AD0261140

Title:

ATTITUDE REFERENCE AS ESTABLISHED BY A HORIZON SCANNER

Descriptive Note:

Corporate Author:

AEROSPACE CORP EL SEGUNDO CALIF

Personal Author(s):

Report Date:

1961-06-19

Pagination or Media Count:

1.0

Abstract:

An attitude reference frame is defined which is the natural frame defined by a horizon scanner and certain requirements on the forward direction. Relative to this frame there is no systematic sensor error, but its motion introduces inertial reaction torque disturbances into the system. Magnitudes and time structure of the latter are examined for several specific cases. It is concluded that if disturbance torque levels of the order of 100 dyne-cm are negligible in the system, the horizon scanner reference frame can replace a geocentric vertical frame ad libitum. Otherwise, allowance must be made for the contribution to inertial reaction torque caused by the difference between these frames. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE